Career
He was drafted in the supplemental 1st round of the 2007 Major League Baseball Draft. Mangini played college baseball for both the North Carolina State Wolfpack and Oklahoma State Cowboys. On September 22, 2010, Mangini was added to the Seattle Mariners 40-man roster.
Mangini started the 2011 season on the disabled list and was activated on April 21, but was immediately optioned to Triple-A. He was released on August 23, after leaving Triple-A Tacoma for an undisclosed personal issue.
The Tampa Bay Rays signed Mangini to a minor league contract on December 6, 2011. He also received an invitation to spring training.
The Arizona Diamondbacks signed Mangini to a minor league contract on August 14, 2012. He signed a minor league contract with the Cincinnati Reds on February 2, 2013.
He was released on March 27.